Prescribed mebeverine for possible gynaecological troubles

I am a 30 year old female- i went to my doctor complaining of lower abdominal pains. These pains last anything between 3-7 days and have happened on 4 seperate occasions in the past month. Very painful. Had UTI test, cervical smear & swabs-all clear. He says he has ruled out IBS and said the next step was to be ultrasound of ovaries, uterus etc. Today he put me on Mebeverine and wants to see how i am after 2 weeks of that. All i can see is that Mebeverine is given for digestion troubles, are there any hidden benefits that help with gynaecological troubles or am i wasting my time? I want children one day and am concerned that this delay might be costly. For years i have had very bad periods-bed ridden for 3 days every month due to pain. I am on Mefanemic Acid, and the Yasmin (contraceptive pill) to help with these but no further investigation has ever been conducted.